Projection slide file



8- 1952 A. J. M MASTER PROJECTION SLIDE FILE Filed April 9, 1947 l IN V EN TOR.

7 m? JM/l/aaefl Patented Aug. 26, 1952 Archie- J-.. McMaster, Deerfield,.lll., assignor; to

G-M'Laboratories, Inc., Chicago, 111., a ,corporation. of Illinois Application A rils, 1947; ScrialNo. 740,349

My invention relatedto.- a, projection slide file which simplifies indexing, storage. andhandling of the slides" during projection.

A; considerable industry has develo'pedin the production and projection ofv miniature transparencies, usually colored photographs, in which the negative is developed, to form a: positive image when projected. Such miniature transparencies are employed extensively by amateurs but are also.- employed semi professionally as, for example, by lecturers addressing technical societies, in class room work and the like. The miniature transparencies of: the type described are conveniently mounted to form 2. x2 slides, either by encircling thefilm directly with apaper frame toform a so-called; ready mount; or by placing. the film between a. pair of lass plates which are held.- together by apaper or like bind ing toproducea usual typeofglass slide. Slides of. the type described are indexed invarious ways, but usually by placing a number or other identifying symbol. on the slide and cross matchingit. to an index which describes the slide, So far as I. know, no fully satisfactory means. for storing, indexingandhandling slides-during: brojection hasbeenv madeavailable for theamateur orsemi-professional using miniature transparencies. of the type described.

The principal object of my invention is the provision ofv an improved. slide file.

Another object is the provision of a slide file so constructed and arranged that'the slides are readily associated with the card indexwithout the need of cross reference.

Still another object is the provision of a slide file in which the slides canbe withdrawn and into which they can be inserted directly during projection, the same file being used to store, classify and. index the slides.

I have embodied features of my presentinventionin a slide file, a preferred embodiment of which. is shown in the drawings in. whiche- Fig. 1 i's-a perspective view showing theslide file in the position for projecting, but: with a center portion of the slides removed to illustrate structural details;

Fig. 2 is a transverse sectional view taken on the line 2-2 of Fig. 1;

Fig. 3 is a fragmentary longitudinal vertical sectional view taken on the line 33 of Fig. 2;

Fig. 4 is a fragmentary sectional view taken on the line 4-4 of Fig. 1;

Fig. 5 is a fragmentary sectional view partly in elevation taken on the line 5--5 of Fig. 2 looking in the direction of the arrows;

3 Claims. (Cl.,129--:)1

Fig: 6 is: a reduced perspective. view.- showing the slide file with the cover ingposition and with the. file and contents ready for storage;

Fig; '7 is a: transverse sectional-yiewtaken on'the line T-l ofi'i'g 6,.lookingr thedirectionof'the arrows; and I v i Fig. 8 is a slightly enlarged perspective view showing a. spring hinge member employem' to support an indexcard. in adjustable pbsitionon the edge of the-slide'filebody. 1'

The slide file of my invention comprises a file body It] and cover H which. may. function to support the body ID in the manner showrri'n Fig. 1 or to. form a closure therefor as shown in. Figs. '6 and 7;. The, body In. is provided with vertical: separators. l2. forming aligned" vertical waysforreceiving slides I3. An. indexv carda I4 is provided with lines [6 and is adapted: either to be. supported; in a horizontal plane. as shown in, Fig; l, or to lie flat against the side of the file. body as: shown in. Fig. '7. The. index: card I4. is: formed of relatively heavy and: durable fiberan-d has a plurality of reinforcing eyelets lzl': intowhich an upper angular portion of. aspring: hingemember I8 is, secured. The spring hinge member isxof generally U-shape; as shown in Fig. 8 and, extends through a small opening IS in: the lower. portion of the body Illand atop part lying in, a 'recessat. the top, edge of the ,file, body as; shown particularly in Fig, 2. 'The -other leg: of the generally- U-shaped spring hingememe ber Iiesalong the. outside surface of the file body andis; drawn in with such-tensionthat the-index card 14 may beheld inthe position shown in Fig. 2, or can, be rotated, as on a hinge tothe position shown' -in Fig. '7. It will 'be noted that there .is a. top projecting; ledge 2,! so positionedthat when thecover; H is applied the card index [4: may read-ilylie between the body and-cover without bi-nding or marr ing.

Therinside end surfaces: of the cover HI are provided with generally T-shaped stop-members 22 so constructed, and arranged that when'the slide body is placed in the inverted. cover in. the manner shown in Figs. 1-3, inclusive, the file body is supported well above the cover in a position making the slides easily accessible. The upper end edges of the file body are provided with recesses 23, however, so arranged that the squat leg of the T, comprising, in a sense, a projection from the cross portion of the T, extends into the associated recess 23 as appears clear from Fig. '7 and permits the cover to descend sufficiently to substantially entirely enclose the slide body and slides contained therein. The

construction and arrangement of the stop member 22 and edge recesses 23 are, therefore, such that when the'slides are being projected and the slide body is supported within the cover the slides set well up so that they are reached readily. When the cover is reversed, on the other hand, a storable package is produced in which the contents of the package are fully protected.

Heretofore, I referred to the lines IS without comment, but it will be fairly obvious that these lines are intended and may be used for listing slides by description or by the use of any identiv fying symbol. I find that without any attempt 1. A slide file of the character described, comprising a file body having slide ways for projection slides supported in the file body, said file body having end top recesses, and a projecting ledge along one top side edge thereof, hinge spring members of generally U shape having legs of the U at opposite surfaces of the said side and with a top angular portion lying just below said top side projection, and forming a hinge loop, an index card member having apertures along one side through which said angular portions extend, said index card provided with lines so positioned that at such accuracy of production as would lead" to excess manufacturing cost, the space between the lines [6 may be made to correspond substantially exactly with the spaces between the separators I 2, so that a slide will always be stored exactly along side the name and/or number or other symbol identifying that particular slide.

a slide file built to accommodate a given'number of glass slides, approximately three times the number of ready mounts can be stored therein.

In addition to identifying the slides by reference to the index card [4, I provide an indexing or cataloging space 24 onthe end of the cover I I so that when stored, the contents of the package can be readily identified.

I have found the features of my invention to be of unusual advantage in the production 'of a slide file substantially identical with that shown in the drawings. This desirably acceptable 'embodiment has a capacity of thirty-two glass slides and ninety-six ready mounts or an assortment of both. The slides adapted to be accommodated are the usual 2 x 2 slides, and the total package of cover and file body is only 2% X 1 x about 7 /2". As slides are obtained, they may be accumulated directlyin the slide file, and appropriate notations made'not only on the index card but on the cataloging space 24 on the end of the cover. The slides are e'asily'loc'ated for projection, and after projection are returned to their proper space without any danger of confusion, delay or inconvenience, even when operating in the dim light necessary forgood projec tion.. When-the projection procedure has been completed, the slides are back in position, and the only requirement is to remove the'cover from the position shown in Fig. l,'lower the index card [4 and replace the cover as a closure in the manner shown in Fig. 6.

What I claim as new and desire to protect by Letters Patent of the United States is:

matter written thereon will lie opposite the slides, the card adapted to be held horizontally by the hinge'spring members or along the side of the file body below said side projection, and a cover having sto members on its inside end surfaces to support the file body when the cover is reversed, said stop members extending into the said top end recesses, whereby to permit the cover to function as a complete closure member.

2. A slide file of the character described, com-'- prising a file body of generally rectangular shape provided with slide ways for supporting the slides in spaced relation, a slide index card hinged to an upper side edge of the file body, andmeans for supporting said index card in a horizontal position at a level with said upper side edge or vertically along the said side below the said up per edge, said last mentioned means including spring hinge members having top angular portions extending through openings in the index card along one edge thereof.

3. A slide file of the character described, comprising a file body having slide Ways for projection slides supported in the file body, said file body having a projecting ledge along one top side edge thereof, hinge spring members of a generally U shape having legs of the U at opposite sides of the said side, andyvith a top angular portion lying just below said top side projection and forming a hinge loop, and an index card member having apertures along one side through which said angular portionsextend, said index card provided with lines so positioned that matter written thereon will lie opposite the slides, the card adapted to be held horizontally by the hinge spring members or along the side of the file body below said'side projection.

ARCHIE J. MCMASTER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Weiskopf May 31, 1938 

